Hi Thor, The stacktrace ("java.net.UnknownHostException: .slack.com: Name or service not known ") seems to indicate a bad host name or url?
HTH Reinhold Von: jenkinsci-users@googlegroups.com [mailto:jenkinsci-users@googlegroups.com] Im Auftrag von Thor Waway Gesendet: Donnerstag, 19. Oktober 2017 01:00 An: Jenkins Users Betreff: ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path? Hello, While attempting to integrate the Slack Plugin, I keep the above error. Checked issues for this plugin on Github and JIRA but haven't found any open issues. Decided to try posting here first before reporting. Here is the full output of Jenkins Log: Oct 18, 2017 10:40:30 PM INFO org.eclipse.jetty.server.handler.ContextHandler doStart Started w.@68c9d179{/,file:///var/cache/jenkins/war/,AVAILABLE}{/var/cache/jenkins/war}<mailto:w.@68c9d179%7b/,file:///var/cache/jenkins/war/,AVAILABLE%7d%7b/var/cache/jenkins/war%7d> Oct 18, 2017 10:40:30 PM INFO org.eclipse.jetty.util.ssl.SslContextFactory load x509=X509@5884a914(jester.gashiandkinks.com,h=[jester.gashiandkinks.com],w=[])<mailto:x509=X509@5884a914(jester.gashiandkinks.com,h=[jester.gashiandkinks.com],w=[])> for SslContextFactory@50378a4(null,null) Oct 18, 2017 10:40:31 PM INFO org.eclipse.jetty.server.AbstractConnector doStart Started ServerConnector@660acfb{SSL,[ssl, http/1.1]}{0.0.0.0:8443} Oct 18, 2017 10:40:31 PM INFO org.eclipse.jetty.server.Server doStart Started @2639ms Oct 18, 2017 10:40:31 PM INFO winstone.Logger logInternal Winstone Servlet Engine v4.0 running: controlPort=disabled Oct 18, 2017 10:40:31 PM INFO jenkins.InitReactorRunner$1 onAttained Started initialization Oct 18, 2017 10:40:32 PM INFO jenkins.InitReactorRunner$1 onAttained Listed all plugins Oct 18, 2017 10:40:39 PM INFO jenkins.InitReactorRunner$1 onAttained Prepared all plugins Oct 18, 2017 10:40:39 PM INFO jenkins.InitReactorRunner$1 onAttained Started all plugins Oct 18, 2017 10:40:41 PM INFO hudson.ExtensionFinder$GuiceFinder$FaultTolerantScope$1 error Failed to instantiate optional component hudson.plugins.build_timeout.operations.AbortAndRestartOperation$DescriptorImpl; skipping Oct 18, 2017 10:40:42 PM INFO jenkins.InitReactorRunner$1 onAttained Augmented all extensions Oct 18, 2017 10:40:42 PM INFO hudson.slaves.SlaveComputer tryReconnect Attempting to reconnect node-00 Oct 18, 2017 10:40:43 PM INFO jenkins.InitReactorRunner$1 onAttained Loaded all jobs Oct 18, 2017 10:40:43 PM INFO hudson.model.AsyncPeriodicWork$1 run Started Download metadata Oct 18, 2017 10:40:43 PM INFO hudson.model.AsyncPeriodicWork$1 run Finished Download metadata. 13 ms Oct 18, 2017 10:40:43 PM INFO jenkins.InitReactorRunner$1 onAttained Completed initialization Oct 18, 2017 10:40:44 PM INFO org.springframework.context.support.AbstractApplicationContext prepareRefresh Refreshing org.springframework.web.context.support.StaticWebApplicationContext@420407ea<mailto:org.springframework.web.context.support.StaticWebApplicationContext@420407ea>: display name [Root WebApplicationContext]; startup date [Wed Oct 18 22:40:44 UTC 2017]; root of context hierarchy Oct 18, 2017 10:40:44 PM INFO org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory Bean factory for application context [org.springframework.web.context.support.StaticWebApplicationContext@420407ea]: org.springframework.beans.factory.support.DefaultListableBeanFactory@5552a174<mailto:org.springframework.beans.factory.support.DefaultListableBeanFactory@5552a174> Oct 18, 2017 10:40:44 PM INFO org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5552a174<mailto:org.springframework.beans.factory.support.DefaultListableBeanFactory@5552a174>: defining beans [filter,legacy]; root of factory hierarchy Oct 18, 2017 10:40:44 PM INFO jenkins.plugins.slack.SlackNotifier$Migrator onLoaded Starting Settings Migration Process Oct 18, 2017 10:40:44 PM INFO jenkins.plugins.slack.SlackNotifier$Migrator onLoaded Skipping job "GashiandKinks" with type jenkins.branch.OrganizationFolder Oct 18, 2017 10:40:44 PM INFO jenkins.plugins.slack.SlackNotifier$Migrator onLoaded Skipping job "GK-Front" with type org.jenkinsci.plugins.workflow.multibranch.WorkflowMultiBranchProject Oct 18, 2017 10:40:44 PM INFO jenkins.plugins.slack.config.JobConfigMigrator migrate Migrating job "feature-jenkinsfile" with type org.jenkinsci.plugins.workflow.job.WorkflowJob Oct 18, 2017 10:40:44 PM INFO jenkins.plugins.slack.SlackNotifier$Migrator onLoaded Completed Settings Migration Process Oct 18, 2017 10:40:44 PM INFO hudson.WebAppMain$3 run Jenkins is fully up and running Oct 18, 2017 10:42:57 PM INFO com.squareup.okhttp.internal.Platform$JdkWithJettyBootPlatform getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path? Oct 18, 2017 10:42:58 PM INFO com.squareup.okhttp.internal.Platform$JdkWithJettyBootPlatform getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path? Oct 18, 2017 10:43:08 PM INFO com.squareup.okhttp.internal.Platform$JdkWithJettyBootPlatform getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. Is alpn-boot on the boot class path? Oct 18, 2017 10:43:32 PM WARNING jenkins.plugins.slack.StandardSlackService publish Error posting to Slack java.net.UnknownHostException: .slack.com: Name or service not known at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928) at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323) at java.net.InetAddress.getAllByName0(InetAddress.java:1276) at java.net.InetAddress.getAllByName(InetAddress.java:1192) at java.net.InetAddress.getAllByName(InetAddress.java:1126) at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:44) at org.apache.http.impl.conn.HttpClientConnectionOperator.connect(HttpClientConnectionOperator.java:102) at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:314) at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:363) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:219) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:85) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106) at jenkins.plugins.slack.StandardSlackService.publish(StandardSlackService.java:136) at jenkins.plugins.slack.StandardSlackService.publish(StandardSlackService.java:95) at jenkins.plugins.slack.workflow.SlackSendStep$SlackSendStepExecution.run(SlackSendStep.java:258) at jenkins.plugins.slack.workflow.SlackSendStep$SlackSendStepExecution.run(SlackSendStep.java:189) at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1$1.call(AbstractSynchronousNonBlockingStepExecution.java:47) at hudson.security.ACL.impersonate(ACL.java:260) at org.jenkinsci.plugins.workflow.steps.AbstractSynchronousNonBlockingStepExecution$1.run(AbstractSynchronousNonBlockingStepExecution.java:44) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Oct 18, 2017 10:43:33 PM INFO org.jenkinsci.plugins.workflow.job.WorkflowRun finish GashiandKinks/GK-Front/feature-jenkinsfile #64 completed: SUCCESS Oct 18, 2017 10:43:33 PM INFO com.squareup.okhttp.internal.Platform$JdkWithJettyBootPlatform getSelectedProtocol ALPN callback dropped: SPDY and HTTP/2 are disabled. 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